Home / 30,775.58-42,470.30-16,628.42

Finding the Fourth Proportional to 30,775.58, 42,470.30 and 16,628.42

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Solution

The fourth proportional to 30,775.58, 42,470.30 and 16,628.42 is: 22,947.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,775.58 : 42,470.30 = 16,628.42 : x
  2. Step 2: Convert to fraction form
    30,775.58/42,470.30 = 16,628.42/x
  3. Step 3: Cross multiply
    30,775.58x = 42,470.30 × 16,628.42
  4. Step 4: Simplify right side
    30,775.58x = 706,213,985.93
  5. Step 5: Solve for x
    x = 706,213,985.93/30,775.58
  6. Step 6: Final answer
    x = 22,947.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.